Detectives are investigating after a man was found injured at a property in the Garvaghy Park area of Portadown on Thursday 13 August.
Police and paramedics were called to the address at around at around 8.20pm after sounds of a possible disturbance were heard. A 22 year old male, who had sustained a serious head injury was located inside.
He remains in a serious condition in hospital at present.
At this time it is not clear if the injury has occurred as the result of an assault or a fall and detectives in Lurgan CID are keen to hear from anyone who was in the area and who may have witnessed something that could assist the investigation. Detectives can be contacted by calling 101, quoting reference 1944 13/08/20.
Information can also be provided anonymously through the Crimestoppers charity on 0800 555 111.